diff mbox series

[v7,1/6] crypto: ccp: Drop extra doorbell checks

Message ID 20230329220753.7741-2-mario.limonciello@amd.com (mailing list archive)
State Superseded
Delegated to: Herbert Xu
Headers show
Series Use CCP driver to handle PSP I2C arbitration | expand

Commit Message

Mario Limonciello March 29, 2023, 10:07 p.m. UTC 
The doorbell register set used for I2C arbitration is dedicated for this
purpose and there is no need to utilize other safety checks the platform
access register set uses.

Suggested-by: Mark Hasemeyer <markhas@chromium.org>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
---
v6->v7:
 * new patch
---
 drivers/crypto/ccp/platform-access.c | 20 --------------------
 1 file changed, 20 deletions(-)


base-commit: 9117e682b8b79f7b5e2517fd28d42757d3e8b860

Comments

Mark Hasemeyer March 31, 2023, 7:28 p.m. UTC | #1 
Reviewed-by: Mark Hasemeyer <markhas@chromium.org>
diff mbox series

Patch

diff --git a/drivers/crypto/ccp/platform-access.c b/drivers/crypto/ccp/platform-access.c
index b51fb1196932..1ad3a0a512b1 100644
--- a/drivers/crypto/ccp/platform-access.c
+++ b/drivers/crypto/ccp/platform-access.c
@@ -20,14 +20,6 @@ 
 
 #define PSP_CMD_TIMEOUT_US	(500 * USEC_PER_MSEC)
 
-/* Doorbell shouldn't be ringing */
-static int check_doorbell(u32 __iomem *doorbell)
-{
-	u32 tmp;
-
-	return readl_poll_timeout(doorbell, tmp, tmp != 0, 0, PSP_CMD_TIMEOUT_US);
-}
-
 /* Recovery field should be equal 0 to start sending commands */
 static int check_recovery(u32 __iomem *cmd)
 {
@@ -156,18 +148,6 @@  int psp_ring_platform_doorbell(int msg)
 
 	mutex_lock(&pa_dev->doorbell_mutex);
 
-	if (check_doorbell(button)) {
-		dev_dbg(psp->dev, "doorbell is not ready\n");
-		ret = -EBUSY;
-		goto unlock;
-	}
-
-	if (check_recovery(cmd)) {
-		dev_dbg(psp->dev, "doorbell command in recovery\n");
-		ret = -EBUSY;
-		goto unlock;
-	}
-
 	if (wait_cmd(cmd)) {
 		dev_dbg(psp->dev, "doorbell command not done processing\n");
 		ret = -EBUSY;